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22 October, 11:21

Exit A bag contains 4 red marbles and 5 blue marbles. If two marbles are chosen at random, one at a time and without replacement, what is the probability of getting two red marbles?

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  1. 22 October, 14:33
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    4 red, 5 blue ... total of 9

    P (red) = 4/9

    without replacement

    P (red) = 3/8

    P (2 reds) = 4/9 * 3/8 = 1/6 <==
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